Home / 154,284.91-212,903.15-86,290.11

Finding the Fourth Proportional to 154,284.91, 212,903.15 and 86,290.11

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Solution

The fourth proportional to 154,284.91, 212,903.15 and 86,290.11 is: 119,074.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,284.91 : 212,903.15 = 86,290.11 : x
  2. Step 2: Convert to fraction form
    154,284.91/212,903.15 = 86,290.11/x
  3. Step 3: Cross multiply
    154,284.91x = 212,903.15 × 86,290.11
  4. Step 4: Simplify right side
    154,284.91x = 18,371,436,232.85
  5. Step 5: Solve for x
    x = 18,371,436,232.85/154,284.91
  6. Step 6: Final answer
    x = 119,074.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.